So my son is from my previous relationship two years ago, ive been a single mother since his birth. So therefore he is spoiled and use to being the only child or guy around his mommy! I started dated a friend I've been knowing we been together for a year in March we are now having a child together a little girl due April 7! But for some reason my son has been acting out playing like he is a baby he is potty trained doing very well. We just can't seem to understand why he is having these tantrums,  whining, talking back, fighting us and kicking and screaming!! Can anyone give me some advice of what I should do or why he is acting this way???? He is 2 years old and 4 months a very smart kid, it's just really frustrating because I don't like too whoop him but again it's like he is testing me..